c# How to create a SortableBindingList from a List<T>

Question

I have a List of objects (all strings) that populates a DataGridView however I am unable to use the column headers to sort. I have been reading up on SortableBindingList to solve the problem, sadly however, since I have only been learning code for a few days, I am unable to understand how to implement it. Any advice to get me moving again would be greatly appreciated (please keep it simple as possible).

Here is my code so far

{
public class Product
{
    public string itemCode;
    public string description;
    public string currentCount;
    public string onOrder;

    public string ItemCode
    {
        get
        {
            return itemCode;
        }
        set
        {
            itemCode = value;
        }
    }
    public string Description
    {
        get
        {
            return description;
        }
        set
        {
            description = value;
        }
    }
    public string CurrentCount
    {
        get
        {
            return currentCount;
        }
        set
        {
            currentCount = value;
        }
    }
    public string OnOrder
    {
        get
        {
            return onOrder;
        }
        set
        {
            onOrder = value;
        }
    }
}


{
class Program
{
    public static List<Product> itemList = new List<Product>();
    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main()
    {
        //Reads csv file
        var filestream = new FileStream(@"c:\StockFile\stocklist.csv", FileMode.Open,
        FileAccess.Read, FileShare.ReadWrite);
        var file = new StreamReader(filestream, Encoding.UTF8, true, 128);
        string lineOfText;

        bool firstLine = true;
        while ((lineOfText = file.ReadLine()) != null)
        {

            if (!firstLine)
            {
                // splits the values        
                string[] elements;
                Product newItem = new Product();
                elements = lineOfText.Split(',');
                newItem.itemCode = elements[0];
                newItem.description = elements[1];
                newItem.currentCount = elements[2];
                newItem.onOrder = elements[3];

                // add to list
                itemList.Add(newItem);
            }
            else
                firstLine = false;
        }
        //loads grid
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new Form1());


        //Output to file
        using (TextWriter tw = new StreamWriter(@"C:\StockFile\stocklist.csv"))
        {
            tw.WriteLine("Item Code,Item Description,Current Count,On Order");
            foreach (Product newItem in itemList)
            {
                tw.WriteLine(newItem.ItemCode + "," + newItem.Description + "," + newItem.CurrentCount + "," + newItem.OnOrder);

            }
        } 
    }
}


{
public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }
    //Binds data to Grid
    private void Form1_Load(object sender, EventArgs e)
    {
        var source = new BindingSource();
        source.DataSource = Program.itemList;
        dataGridView1.DataSource = source;
        dataGridView1.AutoGenerateColumns = true;
        this.Controls.Add(dataGridView1);
        dataGridView1.Refresh();

        foreach (DataGridViewColumn column in dataGridView1.Columns)
        {

            dataGridView1.Columns[column.Name].SortMode = DataGridViewColumnSortMode.Automatic;
        }


        //Make Colomns read only
        foreach (DataGridViewColumn col in dataGridView1.Columns)
        {
            if (col.Name == "CurrentCount")
            {
                col.ReadOnly = false;
            }
            else
            {
                col.ReadOnly = true;
            }
        }
    }

}

Answer 1

There is example code for a SortableBindingList here...

https://stackoverflow.com/a/40051526/2093531

To convert a List to a SortableBindingList...

SortableBindingList<YourListType> sortableBindingList = new SortableBindingList<YourListType>(list);